JP3083888U - Rotation balance structure of AC motor - Google Patents

Abstract

(57) [Problem] To provide a rotation equilibrium structure of an AC motor that can obtain a more stable rotation effect when the AC motor rotates, and reduce noise due to rotation. is there. SOLUTION: A shaft seat for pivotally attaching a rotation shaft of a rotor is formed on a base, a balance piece and a stator set are provided on the base, and the stator set is formed by stacking a plurality of silicon steel pieces having a center hole. A coil is wound around the stator set, an insulating ring is provided, a center hole is formed in the insulating ring, an induction ring is formed in the rotor, and the induction ring is formed inside the center hole of the stator set. And the end face of the guide ring is configured to be able to suck each other in correspondence with the balancing piece fixed to the base.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a rotation equilibrium structure of an AC motor, and more particularly to a rotation equilibrium structure of an AC motor having a better and stable rotation effect when the AC motor rotates.

[0002]

[Prior art]

 Conventionally, this type is as follows.

[0003] Japanese Patent Application No. 11-90732, filed in Japan by the applicant of the present invention, describes a structure of a brushless DC motor, which includes a balance piece, a stator, and a rotor, and the balance piece is made of a material having good magnetic conductivity. At the same time, a shaft hole is formed in the balancing piece. The stator is connected by a shaft tube together with the balancing piece, and the rotor is provided with a shaft for pivoting to the shaft tube. The rotor is controlled to rotate by a control element. An annular permanent magnet is provided on the rotor.The diameter of the permanent magnet is almost the same as the diameter of the balancing piece, and the permanent magnet and the balancing piece are attracted correspondingly while maintaining a fixed distance. It is configured.

[0004]

[Problems to be solved by the invention]

 The first object of the present invention is to provide a rotation equilibrium structure of an AC motor that can obtain a more stable rotation effect when the AC motor rotates, and reduce noise due to rotation. is there.

[0005]

[Means for Solving the Problems]

 In order to achieve the above object, the rotational equilibrium structure of the AC motor according to the present invention is as follows. That is, the rotation equilibrium structure of the AC motor includes a base, a stator set, and a rotor. A shaft seat is formed on the base, and a balancing piece is provided around the outer peripheral wall of the shaft seat. The stator set is formed by stacking a plurality of silicon steel pieces having a center hole, a coil is wound around the stator set, and the stator set is fixed to the base and formed so as to be separated from the balancing piece by an insulating ring. A center hole is formed in the insulating ring. A guide ring is formed on the rotor, and the guide ring is housed inside the center hole of the stator set, and the end face of the guide ring is formed so as to be able to suck each other in correspondence with the balancing piece fixed to the base. .

Further, the rotation equilibrium structure of the AC motor according to the present invention can be configured as follows. 1. The balancing piece is formed so as to be pressed and fixed by the insulating ring. 2. A magnetic insulating layer is provided around the end surface of the induction ring of the rotor, and the ring-shaped permanent magnet is attached to and fixed to the magnetic insulating layer, and the ring-shaped permanent magnet attracts each other according to the balancing piece fixed to the base. be able to. 3. The magnetic insulating layer provided around the rotor is adhered and fixed to the end surface of the induction ring with an adhesive, the annular wall surface is formed on the magnetic insulating layer, and the annular permanent wall is fixed with an interference fit to the annular wall surface. Used to do. 4. The end face of the rotation shaft of the rotor is formed so as to abut a cap fixed to the base. 5. It is composed of a base, a stator set and a rotor. A shaft seat is formed on the base, and an annular permanent magnet is provided around the outer peripheral wall of the shaft seat. The stator set is formed by stacking a plurality of pieces of silicon steel having a center hole.A coil is wound around the stator set, and the stator set is fixed to the base and formed so as to be separated from the annular permanent magnet by an insulating ring. A central hole is formed in the insulating ring. An induction ring is formed in the rotor, and the induction ring is housed inside the center hole of the stator set. A magnetic insulating layer and an equilibrium piece are provided around the end surface of the induction ring, and the equilibrium piece is formed so as to be able to attract each other corresponding to the annular permanent magnet fixed to the base. 6. The annular permanent magnet is formed so as to be pressed and fixed by the insulating ring. 7. A magnetic insulating layer is provided around the end surface of the induction ring of the rotor, and the balancing piece is attached and fixed to the magnetic insulating layer, and the balancing piece is attracted to each other in correspondence with the annular permanent magnet fixed to the base. it can. 8. The end face of the rotation shaft of the rotor is formed so as to abut a cap fixed to the base.

[0007]

[Embodiment of the invention]

 Embodiments of the present invention will be described below with reference to the drawings.

[0008]

Embodiment 1 FIG. 1 is an exploded perspective view of a rotation equilibrium structure of an AC motor according to a first embodiment of the present invention. The AC motor of the present invention mainly includes members such as a base 1, a stator set 2, and a rotor 3. Be composed.

The base 1 can be formed of a casing of an AC motor. As shown in FIG. 1, the base 1 is a frame of a heat radiating fan, and the base 1 is formed with a fixing portion 11 such as a screw hole and a bolt. The stator set 2 can be fixed at a fixed position by the positioning member 12 of the above. A shaft seat 13 is formed on the base 1 itself, and the shaft seat 13 is used for the rotation shaft 31 of the rotor 3 to pivotally rotate. In order to make the rotation of the rotor 3 smoother, a bearing 14 for fitting the rotation shaft 31 of the individual rotor 3 to the shaft seat 13 is fitted to the shaft seat 13, and a locking member 15 such as a C-shaped locking ring is used. The rotating shaft 31 can be fixed. The end face of the shaft seat 13 can be used to seal the cap 16 and the cap 16 can be used to abut the rotating shaft 31, so that the rotation of the rotor 3 is further stabilized. A balancing piece 17 is provided around the outer peripheral wall of the shaft seat 13, and the balancing piece 17 is made of a magnetic conductive material.

The stator set 2 is formed by stacking a conventional silicon steel piece 21 having a center hole 20. A coil 22 is wound around the stator set 2, and the center hole 20 is used to accommodate an induction ring 32 of the rotor 3. Used. The stator set 2 is fixed to the base 1 by the positioning member 12, and an insulating ring 23 is provided around the end face of the stator set 2 near the base 1, and the insulating ring 23 is also fitted with the center hole 20 of the stator set 2. The silicon steel piece 21 of the stator set 2 is isolated by the insulating ring 23 so as not to contact the balancing piece 17, and the balancing piece 17 is separated from the center hole 231 of the insulating ring 23 by the insulating ring 23. And the balancing piece 17 can be pressed and fixed by the insulating ring 23.

The rotor 3 is pivotally attached to the inside of the shaft seat 13 of the base 1 by a rotating shaft 31, and is locked by a hooking member 15 so as not to escape, and the rotating shaft 31 is further fixed by a cap 16. Therefore, the rotation of the rotor 3 is further stabilized. A guide ring 32 is provided inside the rotor 3 so as to be accommodated in the center hole 20 of the stator set 2, and the guide ring 32 can guide the silicon steel piece 21 of the stator set 2. Further, since the end face of the guide ring 32 can pass through the center hole 20 of the stator set 2, the end face of the guide ring 32 is formed so as to be sucked corresponding to the balancing piece 17 fixed to the base 1, or By arranging the magnetic insulating layer 35 and attaching the annular permanent magnet 33 to the magnetic insulating layer 25, the annular permanent magnet 33 and the induction ring 32 are formed to have a magnetic insulating effect. (As shown in FIG. 3). Further, the annular permanent magnet 33 is formed so as to be attracted to the balancing piece 17 fixed to the base 1. Further, the blades 34 are provided on the rotor 3 and can be used as a heat radiation fan.

FIGS. 2 and 3 are a plan view and a sectional view, respectively, showing an assembled state of a rotation balancing structure of an AC motor according to a first embodiment of the present invention. The stator set 2 is fixed to the base 1, and the stator set 2 and the base are mounted. 1, a balancing piece 17 is provided in a loop, the balancing piece 17 is pressed and fixed by an insulating ring 23, and the base 1 is pivotally mounted by a shaft seat 13 so that a rotation shaft 31 of the rotor 3 rotates. The annular permanent magnet 33 provided on the end surface of the induction ring 32 of the rotor 3 is formed so as to be located above the balancing piece 17, so that when the rotor 3 rotates, the annular permanent magnet 33 and the balancing piece 17 are rotated. Can be sucked correspondingly, so that the rotation of the rotor 3 becomes relatively stable.

[0013]

Embodiment 2 FIG. 4 is a cross-sectional view of an assembled state of a rotation equilibrium structure of an AC motor according to a second embodiment of the present invention, in which a magnetic insulating layer 35 is first adhered to an end face of an induction ring 32 of a rotor 3. Further, an annular wall surface is formed on the magnetic insulating layer 35, and the annular wall surface is used for press-fitting and fixing the annular permanent magnet 33 by a tight fit method, so that the magnetic insulating layer 35 can be easily fixed. The goal of fixing can be reached.

[0014]

Embodiment 3 FIG. 5 is a cross-sectional view of an assembled state of a rotation balancing structure of an AC motor according to a third embodiment of the present invention, in which the annular permanent magnet 33 and the balancing piece 17 can be replaced, that is, the annular shape. The permanent magnet 33 is fixed to the base 1 and is pressed and fixed by the insulating ring 23. The balancing piece 17 is isolated by the magnetic insulating layer 35, and is attached and fixed to the end face of the guide ring 32 of the rotor 3, so that the rotor 3 can obtain a more stable rotation.

[0015]

[Effect of the invention]

 According to the rotation equilibrium structure of the AC motor of the present invention, when the rotor rotates, the annular permanent magnet provided by the end face of the balance piece and the guide ring of the rotor or the guide piece of the rotor and the guide ring of the balance piece corresponds. By sucking and sucking each other, there is an advantage that the rotor can obtain a more stable rotation.

The present invention may be embodied in other ways without departing from its spirit and essential characteristics. Accordingly, the preferred embodiments described herein are illustrative and not intended to be limiting.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a rotation balancing structure of an AC motor according to a first embodiment of the present invention.

FIG. 2 is a plan view of an assembled state of the rotation equilibrium structure of the AC motor shown in FIG.

FIG. 3 is a sectional view taken along line 3-3 in FIG. 2;

FIG. 4 is a cross-sectional view illustrating an assembled state of a rotation balancing structure of an AC motor according to a second embodiment of the present invention.

FIG. 5 is a cross-sectional view illustrating an assembled state of a rotation balancing structure of an AC motor according to a third embodiment of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Base 11 Fixed part 12 Localization member 13 Shaft seat 14 Bearing 15 Screw member 16 Cap 17 Balancing piece 2 Stator set 20 Center hole 21 Silicon steel piece 22 Coil 23 Insulation ring 231 Center hole 3 Rotor 31 Rotation axis 32 Induction ring 33 Ring Permanent magnet 34 Blade 35 Magnetic insulating layer

Claims (9)

[Utility model registration claims] 1. A rotating equilibrium structure of an AC motor comprising a base (1), a stator set (2) and a rotor (3), wherein the base (1) has a shaft seat (14), An equilibrium piece (17) is provided around the outer peripheral wall of the shaft seat (14), and the stator set (2) is formed by stacking a plurality of silicon steel pieces (21) having a center hole (20). The coil (22) is wound around the set (2), and the stator set (2) is fixed to the base (1) and the insulating ring (2) is fixed.
3) is formed so as to be separated from the balancing piece (17), a center hole (231) is formed in the insulating ring (23), and a guide ring (32) is formed in the rotor (3). The ring (32) is housed inside the center hole (20) of the stator set (2), and the end face of the guide ring (32) sucks in correspondence with the balancing piece (17) fixed to the base (1). A rotating equilibrium structure of an AC motor, characterized in that it is formed so as to be able to perform rotation. 2. The balancing piece (17) includes an insulating ring (2).
3. The rotating equilibrium structure of an AC motor according to claim 1, wherein said AC motor is formed so as to be pressed and fixed by 3). 3. An induction ring (3) of said rotor (3).
A magnetic insulating layer (35) is circulated on the end face of 2), the annular permanent magnet (33) is attached and fixed to the magnetic insulating layer (35), and the annular permanent magnet (33) is attached to the base (1). 2. The rotating equilibrium structure of an AC motor according to claim 1, wherein said rotating equilibrium structure is formed so as to be able to attract each other in correspondence with said fixed balancing piece. 4. A magnetic insulating layer (35) provided around the rotor (3) is adhered and fixed to an end face of an induction ring (32) by an adhesive, and the magnetic insulating layer (35) has an annular wall surface. The rotating equilibrium structure of an AC motor according to claim 1, wherein the annular wall is formed and used for fixing an annular permanent magnet (33) in an interference fit manner. 5. The rotor according to claim 1, wherein an end surface of the rotating shaft of the rotor is formed so as to abut a cap fixed to the base. Rotating balance structure of AC motor. 6. A rotating equilibrium structure of an AC motor comprising a base (1), a stator set (2) and a rotor (3), wherein the base (1) has a shaft seat (14), An annular permanent magnet (33) is provided around the outer peripheral wall of the shaft seat (14), and the stator set (2) is formed by stacking a plurality of silicon steel pieces (21) having a center hole (20). A coil (22) is wound around the stator set (2), and the stator set (2) is fixed to the base (1) and formed so as to be isolated from the annular permanent magnet (33) by an insulating ring (23). (23) has a central hole (23
1) is drilled, and a guide ring (32) is formed in the rotor (3). The guide ring (32) is housed inside the center hole (20) of the stator set (2), and the guide ring (32) is formed. ) Are provided on the end faces of the magnetic insulating layer (35) and the balancing piece (1).
7) is arranged, and the balancing piece (17) is formed so as to be able to attract each other corresponding to the annular permanent magnet (33) fixed to the base (1). Rotation balance structure. 7. The rotating equilibrium structure of an AC motor according to claim 6, wherein said annular permanent magnet is formed so as to be pressed and fixed by an insulating ring. 8. The guide ring (3) of the rotor (3).
A magnetic insulating layer (35) is provided around the end face of (2), the balancing piece (17) is attached and fixed to the magnetic insulating layer (35), and the balancing piece (17) is fixed to the base (1). 7. The rotating equilibrium structure of an AC motor according to claim 6, wherein said rotating permanent magnet is formed so as to be able to attract each other corresponding to said annular permanent magnet. 9. The rotor according to claim 6, wherein an end face of the rotation shaft of the rotor is formed so as to abut a cap fixed to the base. Rotating balance structure of AC motor.